Multi-Panel Uplink Timing Advance Derivation from Single Signaling
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Solution Overview
Problem
In wireless communications systems, user equipment (UE) communicating with multiple transmission and reception points (TRPs) receives additional signaling for each TRP, leading to increased overhead and lower spectral efficiency due to multiple timing advance values.
Innovation Solution
The UE receives a single timing advance value and determines timing advance values for each panel based on this value and the timing of downlink signals, allowing efficient communication with multiple TRPs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE receives a timing advance value for each TRP, then communication reliability with multiple TRPs is improved, but signaling overhead increases and spectral efficiency decreases
Solution Approach 1:
The patent merges multiple timing advance values into a single timing advance value that applies to all TRPs. Instead of receiving separate timing advance values for each TRP, the UE receives one timing advance value and applies it uniformly across all TRPs, thereby reducing signaling overhead while maintaining communication reliability
Solution Approach 2:
The single timing advance value serves multiple functions by being applied to all TRPs simultaneously. This universal timing advance value eliminates the need for separate timing advance signaling for each TRP, reducing the overall signaling burden while maintaining reliable communication across all TRPs
2Reliability
If the UE receives additional signaling for each TRP, then communication reliability is improved, but spectral efficiency decreases
Solution Approach 1:
The patent combines multiple timing advance signaling messages into a single timing advance value transmission. This merging of signaling reduces the amount of spectral resources consumed while maintaining the ability to communicate reliably with multiple TRPs
Solution Approach 2:
The patent extracts the essential timing adjustment information into a single timing advance value that captures the necessary synchronization data for all TRPs, eliminating redundant signaling and improving spectral efficiency while preserving communication reliability
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may communicate with a multiple transmission and reception points (TRPs) associated with a base station using multiple panels and each panel of the UE may be associated with a different timing advance value Signaling of multiple timing advance values from the base station to the UE may be associated with large overhead. In some implementations of the present disclosure, the base station and the UE may support methods and algorithms for deriving multiple timing advance values from a single timing advance value. For example, the base station may transmit a timing advance value to the UE and the UE may derive a timing advance value for each panel of the UE based on the received timing advance value and a timing of downlink signals received at each of the panels of the UE.