Enhanced GBBR MRTD Reporting for Multi-TRP Timing Beyond CP
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Solution Overview
Problem
Existing wireless communication networks face challenges in maintaining optimal signal transmission and synchronization in multi-TRP environments due to varying MRTD conditions, particularly when MRTD exceeds the cycle prefix (CP), leading to inefficiencies in UE implementation and network coordination.
Innovation Solution
Enhanced GBBR mechanisms are introduced to enable MRTD reporting for multiple TRPs, allowing UEs to measure and report MRTD greater than CP, with configurations tailored to UE capabilities, ensuring optimal beam pairing and scheduling even under adverse synchronization conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional GBBR mechanisms are used in multi-TRP environments, then network coordination is simplified, but signal transmission reliability deteriorates when MRTD exceeds CP
Solution Approach 1:
The patent implements dynamic GBBR mechanisms that adapt to varying MRTD conditions. The system dynamically selects between different GBBR modes (traditional vs. enhanced) based on whether MRTD exceeds CP, allowing the network to optimize between simplicity and reliability in real-time according to the actual timing difference conditions between TRPs.
Solution Approach 2:
The patent changes the operational parameters of GBBR based on MRTD measurements. When MRTD exceeds CP, the system transitions from traditional GBBR to enhanced GBBR with MRTD reporting, modifying the reporting behavior and measurement parameters to maintain reliable communication under adverse synchronization conditions.
2Reliability
If enhanced GBBR with MRTD reporting is implemented, then signal quality improves under adverse synchronization conditions, but UE implementation complexity increases
Solution Approach 1:
The patent segments the GBBR implementation into multiple modes based on UE capability and network configuration. The UE can operate in traditional GBBR mode or enhanced GBBR mode with MRTD reporting, allowing the complexity to be divided and selected based on specific operational requirements rather than requiring all UEs to implement the full enhanced functionality.
Solution Approach 2:
The network acts as an intermediary that manages the complexity burden. The network configures and controls which UEs perform MRTD measurements and reporting, offloading the decision-making and coordination complexity from individual UEs to the network controller, thereby reducing UE implementation complexity while maintaining signal quality.
3Measurement precision
If MRTD measurements are performed for all TRPs, then beam pairing accuracy improves, but measurement and processing time increases
Solution Approach 1:
The patent implements partial MRTD measurements rather than exhaustive measurements for all possible TRP combinations. The system performs MRTD measurements selectively based on active TRPs and current beam pairing requirements, obtaining sufficient precision for beam pairing without the time overhead of measuring all possible combinations, thus achieving adequate accuracy with reduced time loss.
Data Source
AI summary
The techniques described herein may include solutions for enhanced group-based beam reporting (GBBR) with maximum receive timing difference (MRTD) reporting for multiple transmission reception points (mTRPs). One or more of these solutions may include communicating to user equipment (UE) configuration information for GBBR based on UE capability information and MRTD measurements received from UE. One or more of these solutions may also include receiving from a base station configuration information for performing GBBR, and determining and communicating to the base station, a receive timing difference (RTD) using GBBR. Also provided are solutions for structures of enhanced GBBR.