Multiple Timing Advance Management via TRP Segmentation
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Solution Overview
Problem
Current wireless communication systems face challenges in accurately managing multiple timing advances for wireless devices operating with multiple transmission-reception points, which can lead to inefficiencies and increased power consumption.
Innovation Solution
The proposed solution involves differentiating physical random access channel resources for multiple transmission-reception points, allowing wireless devices to select appropriate resources for timing advance measurements, and implementing a framework for performing random access procedures and providing timing advance commands specific to each transmission-reception point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple timing advances are managed for multiple transmission-reception points, then communication accuracy is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent segments timing advance management by associating each transmission-reception point with a unique timing advance group (TAG) and differentiating physical random access channel resources for each TRP. This allows independent management of timing advances for multiple TRPs, improving measurement accuracy while organizing complexity through structured segmentation.
Solution Approach 2:
The patent applies local quality by providing TRP-specific timing advance commands and differentiating PRACH resources for each transmission-reception point. Each TRP receives customized timing advance management tailored to its specific characteristics, enabling precise local optimization without requiring complete reconfiguration of the entire system.
2Measurement precision
If multiple timing advances are managed for multiple transmission-reception points, then communication accuracy is improved, but power consumption increases
Solution Approach 1:
By segmenting timing advance management into separate TAGs for different TRPs and differentiating PRACH resources, the system enables targeted timing advance updates only when needed for specific TRPs. This reduces unnecessary power consumption compared to managing all TRPs uniformly, while maintaining high measurement accuracy through dedicated resources.
3Measurement precision
If physical random access channel resources are differentiated for multiple transmission-reception points, then timing advance measurement accuracy is improved, but system complexity increases
Solution Approach 1:
The patent segments physical random access channel resources by associating different PRACH resources with different TRPs through TAG differentiation. This segmentation enables the network to identify which TRP a random access procedure targets, improving timing advance measurement accuracy while organizing system complexity through structured resource allocation.
Solution Approach 2:
The patent introduces timing advance groups (TAGs) as intermediaries between the physical random access channel resources and the transmission-reception points. These TAGs serve as mediators that associate PRACH resources with specific TRPs, enabling accurate timing advance measurements while simplifying the overall system architecture through an intermediate organizational layer.
4Reliability
If timing advance groups are managed for multiple transmission-reception points, then communication reliability is improved, but device complexity increases
Solution Approach 1:
The patent segments timing advance management into separate timing advance groups (TAGs) for different transmission-reception points. Each TAG can be independently managed with its own timing advance value and alignment timer, improving communication reliability by ensuring proper timing synchronization for each TRP while organizing complexity through structured segmentation.
Solution Approach 2:
The timing advance group structure serves multiple functions: it differentiates TRPs, manages timing advances, and coordinates random access procedures. This multi-functionality improves communication reliability through comprehensive TRP management while reducing overall system complexity by consolidating multiple management tasks into a unified TAG framework.
Data Source
AI summary
This disclosure relates to techniques for managing multiple timing advances in a wireless communication system. A wireless device may establish wireless links with a first transmission reception point and a second transmission reception point. The wireless device may receive a timing advance command. The wireless device may determine whether the timing advance command is associated with the first TRP or the second TRP.