Multi-TRP Timing Advance Offset Configuration for UL Synchronization
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Solution Overview
Problem
Existing uplink timing control mechanisms in multi-TRP operations only support one n-TimingAdvanceOffset value per serving cell, leading to out-of-sync issues and interference with UL transmissions, affecting network throughput and user experience.
Innovation Solution
A method and apparatus for configuring two timing advance offsets per serving cell, allowing each offset to be associated with different TRPs, ensuring UL synchronization and preventing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one n-TimingAdvanceOffset value is configured per serving cell, then the configuration mechanism remains simple, but UL synchronization cannot be maintained on multiple TRPs
Solution Approach 1:
The patent segments the single n-TimingAdvanceOffset parameter into multiple parameters (first n-TimingAdvanceOffset and second n-TimingAdvanceOffset), each associated with different TRPs. This segmentation allows independent timing offset configuration for each TRP, enabling UL synchronization to be maintained separately on multiple TRPs while resolving the contradiction between synchronization reliability and configuration simplicity.
2Ease of manufacture
If one n-TimingAdvanceOffset value is used for all TRPs, then the configuration is simple, but interference occurs with UL transmissions from other terminals
Solution Approach 1:
The patent applies local quality by configuring different n-TimingAdvanceOffset values for different TRPs based on their specific characteristics and requirements. Each TRP receives a tailored timing offset configuration rather than a uniform setting, which eliminates UL transmission interference caused by applying a single offset value across all TRPs while maintaining configuration manageability.
3Reliability
If two n-TimingAdvanceOffset values are configured per serving cell, then UL synchronization on multiple TRPs is achieved, but the configuration complexity increases
Solution Approach 1:
The patent introduces an intermediary mechanism where the network device acts as a mediator to configure and manage the multiple n-TimingAdvanceOffset parameters. The configuration is conveyed through RRC signaling with a structured format that associates each offset value with specific TRPs, thereby achieving UL synchronization on multiple TRPs while managing configuration complexity through organized parameter structure and automated network control.
Data Source
AI summary
An apparatus, configured in a network device, includes: a memory; processor circuitry coupled to the memory; and a transmitter configured to transmit first information to a terminal equipment, the first information being used for configuring a first parameter and a second parameter, the first parameter including a value of a first timing advance offset of a severing cell, the second parameter including a value of a second timing advance offset, and the serving cell being associated with the value of the first timing advance offset and the value of the second timing advance offset; wherein the first parameter or the first timing advance offset is associated with at least one of the following: a control resource set (CORESET); a timing advance group (TAG); and a physical cell identifier (PCI).