Configurable PRG Set for Dynamic 5G Channel Estimation
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Solution Overview
Problem
Current wireless communication networks, such as UMTS, LTE, and 5G, face challenges in efficiently configuring physical resource block (PRB) bundling size and precoder resource block group (PRG) settings, which affect data demodulation and channel estimation performance, particularly due to fixed PRG sizes that do not align with varying user equipment (UE) bandwidths and radio channel conditions.
Innovation Solution
A method to determine a minimum PRG size based on a UE's operating bandwidth, define a configurable PRG set, and signal this set to the UE, allowing for flexible PRG configuration that aligns with UE-specific bandwidths and subcarrier spacing, thereby optimizing PRB bundling size for improved radio channel estimation and reduced signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed PRG sizes are used for all UEs, then configuration complexity is reduced and signaling overhead is minimized, but channel estimation performance deteriorates due to misalignment with varying UE bandwidths and radio channel conditions
Solution Approach 1:
The patent implements dynamic PRG configuration by introducing a configurable PRG set that can be adapted to different UE bandwidths and subcarrier spacings. The network can dynamically select and signal the appropriate PRG size from the configured set based on current channel conditions and UE capabilities, transforming the static fixed PRG size into a dynamic parameter that optimizes channel estimation performance while maintaining manageable configuration complexity through standardized configuration procedures.
Solution Approach 2:
The patent changes the PRG size parameter from a fixed value to a configurable parameter selected from a predefined set. By establishing a PRG set with multiple possible sizes and allowing the network to signal the appropriate selection, the system enables parameter adaptation to match varying UE bandwidths and subcarrier spacings, thereby improving channel estimation accuracy without requiring completely new configuration mechanisms.
2Measurement precision
If configurable PRG sets are introduced to align with UE-specific bandwidths, then channel estimation performance is improved, but signaling overhead increases due to additional configuration information
Solution Approach 1:
The patent applies preliminary action by pre-configuring a set of candidate PRG sizes that are aligned with standard UE bandwidths and subcarrier spacings combinations. This pre-alignment ensures that when the network needs to configure PRG size, it can directly select from the pre-prepared set without requiring complex real-time calculations or extensive signaling, thereby reducing signaling overhead while maintaining the ability to provide accurate channel estimation for various UE configurations.
Solution Approach 2:
The patent manages signaling overhead by changing the PRG size parameter within a pre-defined constrained set rather than allowing arbitrary values. This parameter change approach with a limited set of standardized options reduces the information that needs to be signaled compared to fully flexible configuration, while still providing sufficient adaptability to match UE-specific bandwidths and subcarrier spacings for improved channel estimation performance.
3Productivity
If PRG size is optimized for each UE's specific bandwidth and subcarrier spacing, then spectral efficiency is improved, but device complexity increases due to multiple configuration options
Solution Approach 1:
The patent optimizes spectral efficiency by enabling parameter changes in PRG size that are specifically tailored to each UE's bandwidth and subcarrier spacing configuration. The predefined PRG set is designed to align with standard 5G NR bandwidth and subcarrier spacing combinations, allowing the network to select the optimal PRG size for each UE scenario. This targeted parameter optimization improves spectral efficiency while avoiding the need for completely flexible and complex configuration mechanisms.
Solution Approach 2:
The patent achieves universality by creating a single configurable PRG set that serves multiple UE configurations with different bandwidths and subcarrier spacings. Rather than requiring separate configuration mechanisms for each UE type, the universal PRG set provides a multi-functional solution that can be applied across various 5G NR scenarios, thereby optimizing spectral efficiency for different UEs without proportionally increasing overall system complexity.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products relating to physical resource block (PRB) bundling size and/or precoding resource block group (PRG) configuration are provided. One method may include determining a minimum PRG size based at least on a user equipment's operating bandwidth, defining a configurable PRG set based on the minimum PRG size, and signaling the PRG set to the user equipment.